Kohler engine runs on

[NoTTD]

Kohler engine on my 10 yr old JD lawn tractor continues to run after key is off. Even if I get off the seat, the kill switch does not stop it. Goes right on idling until I pull the spark plug wire. Any thoughts will appreciated.

 

[Lawnranger]

Check the kill wire going to the coil for a break in the wire. What have you checked so far?